Technical Assistance Document for the Reporting of Daily Air Quality

This guidance is designed to aid local agencies in reporting the air quality using the AQI as required in the Code of Federal Regulations (CFR). For more information contact David Mintz at (mintz.david@epa.gov).
Updated 2018 

EPA plans to post a new version of this document by June 2024 to reflect updates consistent with the final 2024 PM NAAQS rule.

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Technical Assistance Document for the Reporting of Daily Air Quality